Mathematics, 06.07.2019 02:00, bwalker411

If today’s uv index is 8, erin will burn in 15 minutes without sunscreen. if erin puts on lotion with an spf of 25, how long will she be protected? the time it takes to burn without sunscreen multiplied by the spf, or sun protection factor, is the time you can stay in the sun safely with sunscreen.

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If today’s uv index is 8, erin will burn in 15 minutes without sunscreen. if erin puts on lotion wit...